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	hartrees
Energy at 0K	-378.592499
Energy at 298.15K	-378.598459
HF Energy	-377.583789
Counterpoise corrected energy
CP Energy at 298.15K
Counterpoise optimized geometry corrected energy
CP opt. Energy at 298.15K
Nuclear repulsion energy	234.889572

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A_g	3201	3049	0.00
2	A_g	3141	2991	0.00
3	A_g	1755	1671	0.00
4	A_g	1505	1433	0.00
5	A_g	1420	1352	0.00
6	A_g	1277	1216	0.00
7	A_g	687	654	0.00
8	A_g	209	199	0.00
9	A_g	171	163	0.00
10	A_u	1124	1071	83.90
11	A_u	1002	955	150.75
12	A_u	188	179	6.84
13	A_u	75	71	1.58
14	B_g	1095	1043	0.00
15	B_g	988	941	0.00
16	B_g	285	272	0.00
17	B_u	3319	3161	2185.76
18	B_u	3134	2985	376.26
19	B_u	1823	1737	690.85
20	B_u	1471	1401	0.63
21	B_u	1419	1351	37.34
22	B_u	1279	1218	321.78
23	B_u	716	682	43.56
24	B_u	282	268	64.35

Atom	x (Å)	y (Å)
C1	1.573	-1.124
C2	-1.573	1.124
O3	1.573	0.096
O4	-1.573	-0.096
O5	0.515	-1.916
O6	-0.515	1.916
H7	2.507	-1.722
H8	-2.507	1.722
H9	0.294	1.351
H10	-0.294	-1.351

	C1	C2	O3	O4	O5	O6	H7	H8	H9	H10
C1		3.8665	1.2198	3.3095	1.3213	3.6878	1.1089	4.9742	2.7861	1.8800
C2	3.8665		3.3095	1.2198	3.6878	1.3213	4.9742	1.1089	1.8800	2.7861
O3	1.2198	3.3095		3.1514	2.2727	2.7698	2.0436	4.3917	1.7923	2.3613
O4	3.3095	1.2198	3.1514		2.7698	2.2727	4.3917	2.0436	2.3613	1.7923
O5	1.3213	3.6878	2.2727	2.7698		3.9677	2.0010	4.7291	3.2743	0.9863
O6	3.6878	1.3213	2.7698	2.2727	3.9677		4.7291	2.0010	0.9863	3.2743
H7	1.1089	4.9742	2.0436	4.3917	2.0010	4.7291		6.0824	3.7870	2.8246
H8	4.9742	1.1089	4.3917	2.0436	4.7291	2.0010	6.0824		2.8246	3.7870
H9	2.7861	1.8800	1.7923	2.3613	3.2743	0.9863	3.7870	2.8246		2.7649
H10	1.8800	2.7861	2.3613	1.7923	0.9863	3.2743	2.8246	3.7870	2.7649

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	O3	H9	134.458	C1	O5	H10	108.243
C2	O4	H10	134.458	C2	O6	H9	108.243
O3	C1	O5	126.811	O3	C1	H7	122.636
O3	H9	O6	170.487	O4	C2	O6	126.811
O4	C2	H8	122.636	O4	H10	O5	170.487
O5	C1	H7	110.553	O6	C2	H8	110.553

All results from a given calculation for C₂H₄O₄ (Formic acid dimer)

using model chemistry: MP2/cc-pVDZ

States and conformations

	Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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All results from a given calculation for C2H4O4 (Formic acid dimer)

using model chemistry: MP2/cc-pVDZ

States and conformations

All results from a given calculation for C₂H₄O₄ (Formic acid dimer)